# std::chrono::year_month_weekday::year, std::chrono::year_month_weekday::month, std::chrono::year_month_weekday::weekday, std::chrono::year_month_weekday::index, std::chrono::year_month_weekday::weekday_indexed

From cppreference.com
< cpp‎ | chrono‎ | year month weekday

constexpr std::chrono::year year() const noexcept; | (1) | (since C++20)
constexpr std::chrono::month month() const noexcept; | (2) | (since C++20)
constexpr std::chrono::weekday weekday() const noexcept; | (3) | (since C++20)
constexpr unsigned index() const noexcept; | (4) | (since C++20)
constexpr std::chrono::weekday_indexed weekday_indexed() const noexcept; | (5) | (since C++20)

Retrieves the field values stored in this `year_month_weekday` object.

### Return value

1) Returns the stored std::chrono::year value.
2) Returns the stored std::chrono::month value.
3) Returns the stored std::chrono::weekday value.
4) Returns the stored weekday index.
5) weekday()[index()]

### Example

Run this code

    #include <cassert>
    #include <chrono>

    int main()
    {
        constexpr auto ym{std::chrono::year(2021)/std::chrono::January};
        constexpr auto wdi{std::chrono::Wednesday[1]};
        auto ymwdi{ym/wdi};
        const auto index{ymwdi.index() + 1};
        auto weekday{ymwdi.weekday() + std::chrono::days(1)};
        ymwdi = {ymwdi.year()/ymwdi.month()/weekday[index]};
        // Second Thursday in January, 2021
        assert(std::chrono::year_month_day{ymwdi} == std::chrono::January/14/2021);
    }

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